is there anything like "sandboxie" on ubuntu?

Hi,

Q:
Is there anything like "sandboxie" on ubuntu? Some kind of "sandbox" where you can install programs which you don't fully trust, but you want to try them out anyway. When you're done testing, you can then erase "the sandbox" and there's nothing left at all, at this point...

Would be nice if this existed!

Alternatively: Perhaps I could create a "test"-user. This still doesn't solve the problem about .deb-packages that wants me to enter root password... But I would kind of the same effect by deleting /home/test, for programs that doesn't ask for root password for installing into /usr/local or similar...